<script setup lang="ts" name="svgIcon">
import { computed } from 'vue';

// 定义父组件传过来的值
const props = defineProps({
  // svg 图标组件名字
  name: {
    type: String,
    required: true,
  },
  // svg 大小
  size: {
    type: Number,
    default: () => 14,
  },
  // svg 颜色
  color: {
    type: String,
    default: () => '#333',
  },
});

// 在线链接、本地引入地址前缀
const linesString = ['https', 'http', '/src', '/assets', 'data:image'];

// 获取 icon 图标名称
const getIconName = computed(() => {
  return props?.name;
});
// 用于判断 element plus 自带 svg 图标的显示、隐藏
const isShowIconSvg = computed(() => {
  return true;
});
// 用于判断在线链接、本地引入等图标显示、隐藏
const isShowIconImg = computed(() => {
  return linesString.find((str) => props.name?.startsWith(str));
});

const isShowLocalSvg = computed(() => {
  return props?.name?.startsWith('local-');
});
// 设置图标样式
const setIconSvgStyle = computed(() => {
  return `font-size: ${props.size}px;color: ${props.color};`;
});
// 设置图片样式
const setIconImgOutStyle = computed(() => {
  return `width: ${props.size}px;height: ${props.size}px;display: inline-block;overflow: hidden;`;
});
// 设置图片样式
const setIconSvgInsStyle = computed(() => {
  const filterStyle: string[] = [];
  const compatibles: string[] = ['-webkit', '-ms', '-o', '-moz'];
  compatibles.forEach((j) =>
    filterStyle.push(`${j}-filter: drop-shadow(${props.color} 30px 0);`),
  );
  return `width: ${props.size}px;height: ${props.size}px;position: relative;left: -${props.size}px;${filterStyle.join('')}`;
});
</script>

<template>
  <i v-if="isShowIconSvg" :style="setIconSvgStyle" class="el-icon">
    <component :is="getIconName" />
  </i>
  <div v-else-if="isShowIconImg" :style="setIconImgOutStyle">
    <img :src="getIconName" :style="setIconSvgInsStyle" alt="" />
  </div>
  <svg
    v-else-if="isShowLocalSvg"
    :style="setIconImgOutStyle"
    class="svg-icon icon"
  >
    <use :href="`#${getIconName}`" />
  </svg>
  <i v-else :class="getIconName" :style="setIconSvgStyle"></i>
</template>
